Wheel hub cover for rotary air coupling



FIG. 1 is a top, front, right side perspective of a wheel hub cover for rotary air coupling;

FIG. 2 is a top and back perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a back elevational view thereof;

FIG. 5 is a right side elevational view thereof, the left side elevational view being identical thereto;

FIG. 6 is a bottom, back, right side perspective view thereof; and,

FIG. 7 is a bottom plan view thereof. 

The ornamental design for a wheel hub cover for rotary air coupling, as shown and described. 